<body><p align="center"><font face="Arial Black">&nbsp;Acceleration, Gravity, and Equatorial(Latitude = 0) Orbit of Pluto size Drawf Planet.</font><br></p><p align="left"><b><font face="Arial" size="3">Acceleration:</font><font face="Arial" size="4">&nbsp;</font></b><font face="Arial" size="3">Thissimulation allows you to move about above ground in a 2 dimensional</font><b><font face="Arial" size="4">&nbsp;</font></b><font face="Arial" size="3">space(vacuum) in a ion propelled imaginary space ship. The Acceleration of gravity is0.658 meters per second per second downward (-Y direction). Gravity is balanced by centrifugal force when a velocity above 2000 meters per second is achieved.&nbsp; Type in the ship orientation (recommend 22 degress initially)force direction) and thrust duration of 22 seconds, and then click ENTERbutton.&nbsp; This enters desired course and duration into the spaceship ionpropulsion engine control computer. The computer uses the accelerometer sensorinputs to regulate thrust so as to maintain desired acceleration.&nbsp; Engineburn does not begin and <b>Time</b> does not change until an <b>Engine ControlButton</b> is clicked. The <b>STOP ENGINE</b> button advances time by an amountspecified (Thrust Duration as entered) at zero thrust and zero fuelconsumption.&nbsp; During the stop engine period the spaceship will be infreefall, and it will continue to move under the influence of gravity (-0.658 M/S/S ).</font></p><p align="left"><font face="Arial" size="3">Start by launching the spaceship(0 - 90 degrees) at full thrust for a period of 33 seconds and thenpress STOP Engine several times observing freefall motion of spaceship.&nbsp;After the spaceship is well into its descent start using a combination of Engineburns( SLOW, Full Speed Ahead)&nbsp; and Freefalls (STOP Engines) to landsafely or to achieve orbit. A safe landing speed of 4 meters per second would be reasonable. You canset your goal (game rules) if you wish.&nbsp; The game stops when Grou;nd Radar Elevation goes negative.Practice landing or achieving orbit with a minimum of fuel usage.&nbsp; An alert message indicatesground impact.&nbsp;&nbsp;</font></p><p align="left">&nbsp;</p>